I've just started but here's my take. Moving objects and nights don't generally go together until you expect some special light effects. generally they result in trails of light. While moving objects would require implementing the rules of sports photography, the night scenes require a lot of light synonymous with longer exposure.

Thus, a high ISO, high shutter speed and a large aperture is what you should be looking for when shooting moving objects at night. You may not really need a tripod since either ways you are shooting mobile objects however if you plan to zoom-in you would want some kind of vibration reduction.

If you don't want light trails, you will need a really fast lens or a really high ISO or both.

Or,

You could put the camera on bulb mode, open the shutter and leave it open until the train comes. When the train comes, fire a flash(the built-in flash will not do), then close the shutter or leave it for longer still depending on how much light you want from the surroundings. This should allow the train to be well lit while keeping the surroundings from going all dark. It would take a couple of tries though.